import { OnDestroy, InjectionToken } from '@angular/core';
import { BooleanInput } from '@angular/cdk/coercion';
/**
 * Injection token that can be used to reference instances of `RDropListGroup`. It serves as
 * alternative token to the actual `RDropListGroup` class which could cause unnecessary
 * retention of the class and its directive metadata.
 */
export declare const R_DROP_LIST_GROUP: InjectionToken<RDropListGroup<unknown>>;
/**
 * Declaratively connects sibling `rDropList` instances together. All of the `rDropList`
 * elements that are placed inside a `rDropListGroup` will be connected to each other
 * automatically. Can be used as an alternative to the `rDropListConnectedTo` input
 * from `rDropList`.
 */
export declare class RDropListGroup<T> implements OnDestroy {
    /** Drop lists registered inside the group. */
    readonly _items: Set<T>;
    /** Whether starting a dragging sequence from inside this group is disabled. */
    get disabled(): boolean;
    set disabled(value: boolean);
    private _disabled;
    ngOnDestroy(): void;
    static ngAcceptInputType_disabled: BooleanInput;
}
